linux-kernel - Re: [PATCH 3/4] rtla/timerlat: Add example for BPF action program

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Message-ID: <c52490c9c2f682fd3c30d6f8a198be2ba408c4fe.camel@redhat.com>
Date: Mon, 20 Oct 2025 12:53:21 -0500
From: Crystal Wood <crwood@...hat.com>
To: Tomas Glozar <tglozar@...hat.com>, Steven Rostedt <rostedt@...dmis.org>
Cc: LKML <linux-kernel@...r.kernel.org>, Linux Trace Kernel	
 <linux-trace-kernel@...r.kernel.org>, John Kacur <jkacur@...hat.com>, Luis
 Goncalves <lgoncalv@...hat.com>, Costa Shulyupin <costa.shul@...hat.com>,
 Wander Lairson Costa	 <wander@...hat.com>, Arnaldo Carvalho de Melo
 <acme@...nel.org>
Subject: Re: [PATCH 3/4] rtla/timerlat: Add example for BPF action program

On Fri, 2025-10-17 at 16:46 +0200, Tomas Glozar wrote:
> Add an example BPF action program that prints the measured latency to
> the tracefs buffer via bpf_printk().
> 
> Signed-off-by: Tomas Glozar <tglozar@...hat.com>
> ---
>  tools/tracing/rtla/sample/timerlat_bpf_action.c | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
>  create mode 100644 tools/tracing/rtla/sample/timerlat_bpf_action.c

We should have the makefile build this, and add a test that uses it.

-Crystal